TIMBER OF THE UNITED STATES AND CANADA 109 



vegetations of the world gave way before it, their remains 

 being buried. When the ice receded, just two species, the 



[Ily permission of U. S. Dept. of Agriculture. 



FIG. 21. Fire-scarred medium-sized "Big Tree" (Sequoia 

 Washingtoniana) on right. The Sugar Pine on left is 8 ft. in 

 diameter. 



redwood and the big tree, survived, occupying a small area of 

 high land in the west, where they just manage to hold their 

 own and do not increase. The " big tree " is nowhere found 



